Advice needed

Ok I’ve never posted before so my bad if I do some stupid shit. I’m a 16M turned 16 in January, and a girl in my class has a crush on me and today while she wasn’t at school she had one of her friends give me her number. Cool alright whatever but she is a year and a half younger than me, she is 14 and her birthday is in August. I don’t know how to feel about that because I’ve asked several of my friends what they think and I’ve gotten answers saying “yeah dude that’s fine” and some saying “no steer clear” but I don’t know. I don’t know if that’s an appropriate age gap and I feel divided but I’m leaning more towards not Okie dokie. I don’t want to do anything weird but I also just don’t know. Flat out I’m a pretty lonely person and I don’t want that to guide my actions or influence what I think so I wanted some outside opinions from people so any advice would be much appreciated.